This book theorizes subversive action, a neglected mechanism in the new institutionalism literature. Subversive action is political in nature, secretly undermining some institutions to open up alternative ideas or to secure existing institutions by secretly undermining adversaries. An example is a politician who promises change in public, but does something else behind the scenes to preserve the status quo. The book addresses the nature and meaning of subversive action and the contexts that give rise to it, as well as how it can work as an important mechanism behind institutional change and continuity. The book will interest students and scholars of public policy, public administration and political science.